S4 Quattro Cabriolet V8-4.2L (BHF) (2008)
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Disconnect electrical harness connector - 3 - at Mass Air Flow (MAF) Sensor (G70).
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Disconnect hose - 1 - to Secondary Air Injection pump.
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Disconnect air guide hose - 4 - at Mass Air Flow sensor.
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Move wiring harness clear at air filter housing.
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Remove clip and remove air filter housing with Mass Air Flow sensor.
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Disconnect vacuum hose - 1 -.
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Disconnect air guide hose - 2 - from throttle valve control module.
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Disconnect vacuum hose - arrow - from intake manifold.
